Hickok Catalog #120 This catalog has no date but covers models produced between 1939 and 1945. View Catalog (Adobe PDF File)

Early Hickok Audio and Radio Signal Generator - Model 46? This early Hickok Signal Generator is AC powered. There is no model number on the faceplate or the case. It has Model 46 printed on the face of the meter. It generates audio and RF signals in 7 ranges from kilocycles through the broadcast band and megacycles. Tuning dial has a bakelite case with the HICKOK name molded into it. I'd place it in the early 1930's. It looks to be the same series as the next two meters below. Larger Photo Tuning Dial

Early Hickok Volt/Ohm/Capacity Meter - Model 47? This early Hickok meter is AC powered. There is no model number on the faceplate or the case. It has Model 47 printed on the face of one meter. It measurers resistance, capacitance, and voltage. It uses an original Sylvania SX-171-A Power Amplifier 4 pin vacuum tube. From the construction I'd place it in the late 1920's. Meter Face Meter in case Hickok Nameplate

Early Hickok Volt/Ohm Meter - Model 48? This is one of the earliest Hickok meters I have seen. It is marked Model 48 on the face of the meter. It measurers resistance (Ohms) and DC voltage. From the construction I'd place it in the late 1920's. It uses the same style of parts as the SG-4600 Tube Tester below and the Hickok Model 47 meter above. Larger Photo

Early Hickok Tube Tester - SG-4600 ? This early 5 meter Hickok tube tester is battery powered and requires both A and B batteries to perform tube testing. There is no model number on the faceplate or the case. It is similar to the reportedly first commercial Hickok tube tester, the five meter SG-4600 manufactured in the 1920s but this tester only has two tube sockets and a different faceplate layout. The SG-4600 testers I have seen have three tube sockets. I have seen several variations of these Hickok testers. This two socket tester might be the first of that series. Larger Photo Nameplate Photo

Hickok SG-4800 Radio Set Tester This set tester was manufactured around 1929 (guess) and uses several adapters to connect to a radio's tube socket. It measures AC and DC volts, resistance, capacitance, and DC milliamps. The tester tester is battery and AC powered and requires 5 batteries to perform various tests. It has a battery chart glued to the inside bottom of the case. Larger Photo Faceplate and adapters Battery Chart

Hickok Tube Tester - AC-47-A This is the later model of the Hickok AC-47 tube tester series that sold in the early 1930s. It is AC powered and requires an external #80 rectifier tube to perform tube testing. It was produced around 1936. This version has three sockets for testing tubes. The left socket on this AC-47-A will accept several different pin tube bases that the earlier AC-47 models did not have. They required external adapters for testing later tubes. Larger Photo

Hickok Signal Generator Model 10 Hickok Model 10 signal generator, 100 KC - 20 MC output. Right meter is frequency selector and left meter is output in Decibels. Larger Photo

Hickok 51X Tube Tester This Hickok Model 51X Mutual Conductance Tube Tester is the companion to the Model 10 Signal Generator above. The 51X tests tubes, capacitors. It also measurers AC and DC voltages, and resistance. Larger Photo Larger Photo - Face 51X Tube Data Sheet (Adobe PDF File)

Hickok Model 305 Oscilloscope This Hickok Model 305 scope has a 3" display with a pull out light shade around the display tube to reduce glare. It takes up quite a bit of bench space. Larger Photo

Hickok 6000A Tube Tester Not an early model but this 6000A is my daily driver. It was manufactured in the 1960s. I use this tube tester on my workbench for testing newer vacuum tubes. Larger Photo 6000A Manual and tube data sheets

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